Home / 9,124.40-13,686.60-6,645.80

Finding the Fourth Proportional to 9,124.40, 13,686.60 and 6,645.80

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Solution

The fourth proportional to 9,124.40, 13,686.60 and 6,645.80 is: 9,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,124.40 : 13,686.60 = 6,645.80 : x
  2. Step 2: Convert to fraction form
    9,124.40/13,686.60 = 6,645.80/x
  3. Step 3: Cross multiply
    9,124.40x = 13,686.60 × 6,645.80
  4. Step 4: Simplify right side
    9,124.40x = 90,958,406.28
  5. Step 5: Solve for x
    x = 90,958,406.28/9,124.40
  6. Step 6: Final answer
    x = 9,968.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.